Author(s): Omrani MD, Samadzadae S, Bagheri M, Attar K
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Abstract INTRODUCTION: Although assisted reproduction techniques are used extensively in Iran, screening for Y chromosome microdeletions before intracytoplasmic sperm injection is often undervalued. Our aim was to investigate Y chromosome microdeletions in men with idiopathic azoospermia or severe oligospermia. MATERIALS AND METHODS: In 99 selected patients with azoospermia or severe oligospermia and elevated levels of follicle-stimulating hormone and luteinizing hormone in combination with low serum testosterone levels, 20 pairs of sequence-tagged site-based primer sets specific for the Y microdeletion loci were analyzed. Primers were chosen to cover azoospermia factor (AZF) regions as well as deleted in azoospermia (DAZ) and the sex-determining region on Y chromosome (SRY) genes. Also, 100 healthy men served as a control group. RESULTS: Twenty-four patients (24.2\%) had microdeletions in AZF genes, but no microdeletions were found in men in the control group. In 15 patients (62.5\%), 1 deletion was found. Six patients (25\%) had 2, and 3 (12.5\%) had 3 deletions. The deletions mainly comprised the AZFc region (in 21 of 24 patients; 87.5\%), which corresponds to the DAZ gene. Deletions in AZFb were found in 7 patients (29.2\%), and 4 (16.7\%) had deletions in the proximal part of AZF regions near SRY gene. No microdeletions were seen in the AZFa or SRY gene. CONCLUSION: Our results emphasize that Y chromosome microdeletion analysis should be carried out in all patients with idiopathic azoospermia or severe oligospermia who are candidates for intracytoplasmic sperm injection.
This article was published in Urol J
and referenced in Journal of Fertilization: In Vitro - IVF-Worldwide, Reproductive Medicine, Genetics & Stem Cell Biology